ArticleJournal of research in medical sciences : the official journal of Isfahan University of Medical Sciences2018
How may Doppler indices help in the differentiation of obstructive from nonobstructive hydronephrosis?
Article in Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Correlation of Plasma Renin Activity Values and Resistive Index on Ultrasound Doppler with Findings of Renal Dynamic Scan in Patients with the Society of Fetal Ultrasound grades 3 and 4 Unilateral Hydronephrosis.Journal of Indian Association of Pediatric SurgeonsArticle
- Utility of Ureteric Jets as an Adjuvant Diagnostic Modality in Children with Ureteropelvic Junction Obstruction: A Systematic Review and Meta-analysis.Journal of Indian Association of Pediatric SurgeonsReview
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8 authors.
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Abstract
backgroundWe assess the potency of different Doppler indices in the differentiation of obstructive and nonobstructive hydronephrosis. MATERIALS AND
methodsIn this study, infants and children who were referred for the evaluation of unilateral hydronephrosis were enrolled. Ultrasonography for the assessment of the degree of hydronephrosis and a voiding cystourethrogram for the exclusion of vesicoureteral reflux was performed. Then, Doppler ultrasonography was done for both kidneys of each patient using four classic Doppler indices as well as the difference (delta) of each index between to kidneys. Diuretic renography with 99 mTc-ethylene dicysteine (99 mTc-EC) was performed for each patient.
resultsThirty-nine patients met the inclusion criteria. After diuretic renography, 29 (74.35%) patients had shown a nonobstructive pattern, and ten (25.65%) patients had a partial (intermediate) or complete obstruction. Using receiver operating characteristic (ROC) curve, none of the classic indices of Doppler duplex (i.e., resistive index [RI], resistance index, end diastolic velocity, and peak systolic velocity) had the ability to make a difference between obstructive and nonobstructive hydronephrosis. However, by calculating the difference (delta) of these indices between two kidneys of each patient, delta RI could differentiate the nonobstructive condition, significantly (
conclusionThis study shows that RI ratio and delta RI with a high specificity could differentiate nonobstructive hydronephrosis and therefore it is a promising way to use especially in the follow-up of children with hydronephrosis.
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